baber/WOPTO huggingface dataset:
Patent GB-742102-A (GB)
Title: Improvements in and relating to the reproduction of magnetically recorded signals
Inventor: CHOWN AUBREY ALBERT
IPC: G11B5/00
Filed: 1950-10-30
Abstract: 742,102. Sound reproducing circuits. BRITISH BROADCASTING CORPORATION. Jan. 30, 1952 [Oct. 30, 1950; Oct. 30, 1950], Nos. 26473/50 and 26474/50. Class 40 (4). [Also in Groups XXXVIII and XL (c)] A reproducing unit for magnetically recorded signals comprises means to produce a control voltage representative of the amplitude of the recorded signals, and means responsive to the control voltage to erase the recorded signals when the level of the signals falls below a predetermined magnitude. The invention avoids the reproduction of low level spurious signals during quiet periods, due to the transference of signal between adjacent portions of magnetic tape when the reels are stored. In Fig. 2, the magnetic tape 11 passes first through auxiliary reproducing head 22 and then through the main reproducing head 13, from which the signal passes through low pass filter 15, amplifier 16 to loud-speaker 17. The signal from the auxiliary head passes through amplifier 23, delay means 24 (which delays the signal for a period equal approximately to that required to pass the tape from head 22 to head 13) to amplifier and rectifier means 18 which produces a control voltage representative of the signal amplitude. The control voltage varies the attenuation produced by an attenuator 19, which controls the amplitude of high frequency oscillations fed from oscillator 20 to amplifier 21. The output from amplifier 21 is fed to the main reproducing head 13. When the recorded signals are below a predetermined level, high frequency oscillations to erase the recording are fed to the head 13 so that no output appears in the loudspeaker channel. The delay time of means 24 is arranged to be slightly less than the traverse time from head 22 to head 13 so that at changeover times, erasing ceases just before a wanted signal arrives at head 13, while, owing to the additional delay time occurring in amplifier and rectifier means 18 erasing is introduced just after an unwanted signal appears at head 13. A modification is described in which a third head for erasing is used which is situated between the auxiliary and main heads. In a further arrangement, the control voltage is used to mute the audio amplifier feeding loudspeaker 17, instead of providing the erasing oscillations. Fig. 4 shows a circuit suitable for the controlled alternator 19. The high frequency oscillations are applied to terminals 26 across what is effectively a resistance 27 in series with a variable capacitor. The output is taken from across the capacitor via terminal 35. The capacitor is constituted by the input impedance of a Miller valve 28, and this capacity is varied by varying the gain of valve 28 by means of valve 29. The control voltage is applied to the grid of valve 29 to vary the current through the common cathode load resistance 30. A circuit tuned to the frequency of the erasing oscillations is provided in the anode circuit of valve 28.
Patent GB-1298284-A (GB)
Title: Preparation of phenylaminoethanols
Inventor: ATKINSON MICHAEL
IPC: A61K31/13
Filed: 1970-06-02
Abstract: 1298284 Preparation of phenylaminoethanol derivatives ALLEN & HANBURYS Ltd 7 May 1971 [2 June 1970] 26523/70 Heading C2C Phenylaminoethanol derivatives of the general formula in which R 1  is a hydrogen atom or a benzyl group, and R 2  is a hydrogen atom or a straight or branched chain alkyl radical containing 1 to 6 carbon atoms or an arylalkyl radical are prepared by treating a compound of the formula with formaldehyde or a formaldehyde yielding compound in the presence of a strong base and an alkali metal borate. Examples describe the preparation of alpha-1-(benzyl-tertiary butylaminomethyl) - 4 - hydroxy - m - xylene - alpha, alpha<SP>3</SP> - 3 - diol and of alpha<SP>1</SP> - (dibenzylaminomethyl) - 4 - hydroxy - m - xylene - alpha<SP>1</SP>, alpha<SP>3</SP>-diol.
Patent GB-964331-A (GB)
Title: Improvements in and relating to heat exchangers suitable for use as boiler feed water heaters
Inventor: LUDOLFRITZ HUGO HEINRICH
IPC: F28D7/08
Filed: 1959-08-04
Abstract: 964,331. Tube-type heat exchangers. C. A. PARSONS & CO. Ltd. Nov. 1, 1960 [Aug. 4, 1959], No. 26581/59. Heading F4S. A shell and tube type heat exchanger comprises a plurality of tubes arranged in an annular space between the shell 1 and an internal duct 2, 6, the latter passing through a header 5 to an inlet header 4 for the tubes, each tube comprising three series-connected parts I, II, III (Fig. 1a) over which the shell-side fluid flows in the sequence III, II, I. In the form shown, the tube parts II, III are separated by a cylindrical member 8 open at one end and having a port 8b therein. Boiler feed water to be heated flows through the ducts 6, 2 to inlet header 4 and thence through the parts I, II, III of each tube in that order to header 5 from which the now heated feed-water is discharged. Heating steam enters the shell 1 by way of an inlet 13 and is directed by the member 8 over the tube parts III. It then flows through the port 8b and over the tube parts II. Steam condensate collects in the lower part of the shell and flows over the tube parts I before discharge through drain 14, the condensate level being controlled at a level below the tube parts II. Circumferential baffles 10 and longitudinal baffles (not shown) direct the steam in a tortuous path over the tube parts III. The space within the cylindrical member 8 is divided into sectors by radially extending baffles (9, Fig. 2, not shown) which are so arranged that the steam flowing over tube parts II flows in opposite directions through at least some neighbouring sectors. The condensate is caused to flow in a sinuous path over the tube parts I by baffles 12. Specification 874,121 is referred to.
Patent GB-955473-A (GB)
Title: An envelope magazine for use in manifolding or copying account apparatuses
IPC: B41L5/04
Filed: 1960-07-29
Abstract: 955,473. Book-keeping; manifolding apparatus. KONTEK SYSTEM A.B. July 29, 1960 [Sept. 9, 1959], No. 26585/60. Heading B6A. An open-topped magazine or casing 2 for a stack of envelopes, account blanks, and the like, reciprocably mounted in the frame 1 of a manifolding or copying account apparatus, is provided with a vertically movable bottom plate 4 spring-urged upwardly when the casing is in its operative position, to clamp the stack of envelopes in position with the uppermost envelope at a predetermined level so that it may be written on, and the stack released when the casing is in its inoperative position, so that the envelopes may be removed or replaced, said bottomplate carrying pins 5, extending transversely to the direction of movement of the casing, on which cams 10 are pivotally mounted to prevent yielding movement of the bottom plate when the casing is in its operative position and the envelopes are written on, said cams partly sliding and partly rolling along stationary races 11 in the frame during reciprocating movement of the casing. The pins 5 extend through vertical slots 6 in the side walls of the casing and are urged upwardly in their operative position by leaf-springs 7. The shortest distance between the mounting hole for the pin 5 and the periphery of each cam 10 is the same and a group of cams may be mounted on a sleeve having corbelled ends whereby the cams are mounted on the pins 5 in groups. The cams are of fibrous or plastic material, or of metal, in the latter case the cams having spacers of paper material, and may be half-moon, oval or heartshaped.
Patent GB-616466-A (GB)
Title: Improvements in or relating to road vehicles
IPC: B60G99/00
Filed: 1946-09-04
Abstract: 616,466. Vehicle body mountings. DURAMIN ENGINEERING CO., Ltd., and OGLETHORPE, E. L. Sept. 4, 1946, No. 26595. [Class 108 (ii)] The driver's cab of a road vehicle is secured to the chassis at two points at the forward end and at a single point at the rear, the rear suspension point being formed by a fore-andaft pivot 7 about which the cabs can move relative to the chassis, means being provided for resiliently limiting the extent of this movement. The pin 7 passes through a lug depending from a cab frame member 9 and through a friction bush in the bore of a bracket 6 secured to a chassis member 3. The ends of the member 3 are held between upper and lower rubber discs 12 which are mounted between washers 13 on an eye-bolt 11 which hangs from brackets 10 on the cab. The pin 7 is disposed so that the cab is laterally balanced about it.
Patent GB-1428666-A (GB)
Title: Crystal mounting assemblies
IPC: H03H9/19
Filed: 1973-06-04
Abstract: 1428666 Mounting piezo-electric resonators BULOVA WATCH CO Inc 4 June 1973 [23 Jan 1973] 26601/73 Addition to 1415337 Heading H1E A piezo-electric resonator 17 is supported by strain-free leads L1, L2, L3, L4 from an insulating planar member 16 which is housed within the base 11 of a hermetic capsule (cover not shown) and resiliently located therein by terminal pins 12, 13. The pins extend through glass seals 14, 15 in the base and have crooked ends which extend through holes in the member 16 and are soldered to plated areas 18, 19 on the upper face of the member. The member 16 may be of alumina and carries three plated areas 18, 19, 20 to which the leads L are soldered as shown. The resonator 17 may be a quartz XY-cut flexural bar as disclosed in Specification 1,415,337.
Patent GB-205316-A (GB)
Title: Improvements in and relating to electric conductor terminals or connectors
IPC: H01R4/50
Filed: 1922-10-02
Abstract: 205,316. British Thomson-Houston Co., Ltd., (General Electric Co.). Oct. 2, 1922. Variable resistances; inductances.-A terminal or connector for the shunt leads of an electric meter is so constructed that its resistance or reactance may be adjusted to the desired value corresponding to a definite total impedance in the meter circuit. Fig. 1 shows a construction of variable-resistance terminal. The terminal eye 2 is formed with a threaded shank 7 adapted to engage a threaded axial opening 6 in a metal shank 1 secured to the end 5 of the cable, the end 8 of the shank 1 being split and formed with an external conical screw thread which is engaged by a nut 3 to clamp the shank 7 in adjusted position in the opening 6. The shanks 1 and 7 are of metal such as nickel steel adapted to provide the required range of resistance. A variable -resistance connector may be constituted by two shanks 1 connected by a right and left hand threaded bolt adapted to be rotated and clamped in adjusted position. A variable reactance for use in alternating current circuits may be formed by cutting the shank 1 to form a helix provided with an internal thread for adjustment of an iron core similar to the shank 7. Alternatively the shank 1 may be divided into two portions connected by a coil, one portion being connected to the cable and the other being fitted with the adjustable core.
Patent GB-1317816-A (GB)
Title: Load handling devices
Inventor: VAN BAAR J
IPC: B65G49/06
Filed: 1970-06-02
Abstract: 1317816 Device for handling sheets GLAVERBEL 2 June 1970 [6 June 1969] 26610/70 Heading B8H A load-handling device, e.g. for loading and unloading a stack of sheets of glass on to or from a vehicle (not shown) comprises a loadsupporting deck formed by members 5, 6 carrying transverse rails 14-17 on which a stack rests as shown by the broken lines in Fig. 1, an abutment wall 25, 26 having inner rails 35-38 against which the stack abuts and a rear support means comprising an upright 45 connected to an inner post 52, a shoe 65 and a detachable upright 68 carrying shoes 69, 70, such that the stack lies against the shoes 65, 69, 70 and post 52. When it is desired to unload a stack of sheets from a vehicle, the device is pivotally connected to the vehicle by the insertion of a shaft projecting from the vehicle into either of a pair of bearings 20, 21 or 22, 23 and held in a horizontal position by means of a cable 61 and wheel 60, the cable being fixed at one end to the vehicle and attached to a winch at its other end. The stack is moved on to the load-handling device, e.g. by means of a mechanical grab attached to the vehicle and takes the position shown in Fig. 1, the device is then turned clockwise through 90 degrees about the shaft by means of the cable 61 and winch and the stack then rests on the abutment wall 25, 26 and is removed, e.g. by a pallet or gripper associated with a mobile truck. The operation of loading a vehicle is the reverse of that described. The pivotal movement of the load-handling device may alternatively be obtained by directly controlling the rotation of the shaft manually or from a mechanical or electrical power source.
Patent GB-402574-A (GB)
Title: Improvements in or relating to the lubrication of bearings
IPC: F16N9/02
Filed: 1932-09-26
Abstract: 402,574. Lubricating. JAMES, R. T., HAUSSER, P. C. G., and AITKEN, R. L., Bush House, Strand, London. Sept. 26, 1932, No. 26678. [Class 12 (iii).] In an automatic lubricant - feeding device a member is interposed between the bearing surfaces of two members and the said members house a lubricant reservoir having means operated by the friction set up between the parts to force lubricant to the bearing surfaces. As shown in Fig. 1, a sleeve b is interposed between a pulley d and a fixed shaft a. The pulley has a reservoir e containing a disc f which is screwed to the sleeve b and which is slidably and non- rotatably secured to the pulley by a pin g. Normally the pulley and sleeve b rotate together on the shaft a. If undue friction occurs the disc f turns on the sleeve b and moves axially in the reservoir e to force lubricant through passages h in the sleeve b to the bearing surfaces. In a modification a shallow reservoir is formed between the sleeve b and pulley d and both parts have abutments extending thereinto. On relative movement between the sleeve and pulley the abutments approach one another to force lubricant to the bearing surfaces. In another modification a lift guide shoe is formed of two parts 7, 8, Fig. 4, the part 7 having a reservoir 9 into which a blade 11 on the part 8 projects. If relative movement occurs between the parts 7, 8, the blade 11 moves in the reservoir 9 to force lubricant through passages 10 to the guide rod 6. A modification applied to an axial thrust bearing is also described.
Patent GB-1177043-A (GB)
Title: Apparatus for Cooling Rolled Material such as Wire
IPC: B21B45/02
Filed: 1968-06-05
Abstract: 1,177,043. Quenching device. RÍCHLING'SCHE EISEN-U.STAHLWERKE G.m.b.H. June 5, 1968 [June 21, 1967], No.26805/68. Heading C7N. A cooling tube for cooling elongated material, such as hot wire, passing axially through the tube, comprises coaxial inner and outer walls 3 and 1, an inlet 2 for passing a cooling medium under pressure into the space between the walls and nozzles 8 sealed in the inner wall and pointing in the direction of passage of the material. The nozzles are spaced in the tube both longitudinally and angularly with respect to the axis, and each projects through an orifice 5 in the wider end of one of a series of coaxial funnels 4 fixed inside the inner wall. Preferably the nozzles are angularly spaced at intervals of 60 degrees to 120 degrees about the tube axis and the axis of each nozzle may be in an axial plane or at an angle of not more than 20 degrees thereto. Each nozzle is forwardly directed at an angle which is preferably 60 degrees.
Patent GB-532984-A (GB)
Title: Improvements in cathode ray tube indicators
IPC: H03J1/04
Filed: 1939-09-28
Abstract: 532,984. Cathode-ray oscillographs. ALWAY, E. J. Sept. 28, 1939, No. 26813. [Class 37] A cathode ray tube has two pairs of deflecting plates for deflecting the ray in mutually perpendicular directions, the plates of each pair having connected between them a resonant circuit tunable to the frequency of an oscillation to be applied, the two resonant circuits being shielded magnetically from one another and capacitive coupling being provided between points in the two resonant circuits such that when an oscillation of appropriate frequency is applied to one of the resonant circuits the voltages on the two pairs of plates are in quadrature. One pair of plates A1 B1 is connected across a tuned circuit L1, C1, and the second pair A2, B2 is connected across a second tuned circuit L2, C2. Tapping points, which may be variable, on the inductances L1, L2 are connected through a variable condenser C. A point in the circuit is earthed and an earthed shield S is provided to shield the coils L1, L2, from magnetic coupling. Oscillations are applied to a coil L which is coupled magnetically to the coil L1. The circuits L1, C1 and L2, C2 are tuned to the frequency of the applied oscillations. The value of the capacity C is adjusted so that a 90 degree phase shift is obtained between the voltages applied to the two pairs of plates. The apparatus is particularly suitable for observation of the output of short wave apparatus such as transmitters, amplifiers, and test oscillators. At very high frequencies the condenser C may be dispensed with, capacitive coupling being provided by the capacitance C3 between the plates A1 B2. If unmodulated high frequency oscillations are applied, the cathode ray will trace a circular path. A spiral time base may be produced by modulating the oscillations fed to the coil L with a saw-tooth wave. This is particularly suitable for use with lower radio frequencies.
Patent GB-1512312-A (GB)
Title: 3,5-disubstituted-2,4,6-triiodophenyl derivatives
IPC: C07C239/00
Filed: 1976-03-15
Abstract: 1512312 3,5, - Disubstituted - 2,4,6 - triiodophenyl isocyanates and carbamyl chlorides MALLINCKRODT Inc 15 March 1976 [15 May 1975] 26821/77 Divided out of 1512311 Heading C2C 3,5 - Disubstituted - 2,4,6 - triiodophenyl isocyanates and carbamyl chlorides of general formula wherein X and Y each independently represent a lower alkoxy, lower alkoxy-(lower alkoxy), lower acylamino, lower acylamino-(lower alkyl), lower acylamino-(lower acylamino), lower alkoxy - alkoxy - (lower acylamino), N-(lower alkyl)-lower acylamino, lower alkylsulfonamido, N-(lower alkyl)lower alkylsulfonamido, 3,3-bis- (lower alkyl)-ureido, lower perfluoroacylamino, carbamyl, N-(lower alkyl)carbamyl or an N,N- di-(lower alkyl)carbamyl group or an ester, ether, acetal or ketal derivative of a hydroxy, hydroxy-lower alkyl, N-(hydroxy lower alkyl) lower acylamino, N-(polyhydroxy lower alkyl lower acylamino hydroxy - (lower alkoxy), hydroxy-lower acrylamino, N-(hydroxy lower alkyl)carbamyl or an N,N-di-(hydroxy lower alkyl)carbamyl group, where "lower" means 1-6 C atoms, and R<SP>1</SP> is an isocyanate or carbamyl chloride group, are prepared by reacting the corresponding amino compounds with COCl 2 . 5 - Amino - 2,4,6 - triiodo - N - methylisophthalamyl chloride and 3-amino-2,4,6-triiodo-5- (N - methylacetamido) - benzoyl chloride are obtained from the corresponding carboxylic acids with SOCl 2 . 5 - Amino - 2,4,6 - triiodo - N,N,N<SP>1</SP> - trimethylisophthalamide and 3 - amino - 2,4,6- triiodo - N - methyl - 5 - (N - methylacetamido)- benzamide are prepared from the dione acid chlorides with dimethylamine and methylamine respectively. 3 - Acetamido - 5 - amino - 2,4,6 - triiodo - N - methylbenzamide is prepared from 3-acetamido- 5 - amino - 2,4,6 - triiodobenzoic acid, SOCl 2  and methylamine. 3 - Amino - 2,4,6 - triiodo - 5 - (N - methylacetamido)-benzoic acid is obtained from the corresponding 5- acetamido derivative and methyl iodide. 3 - Amino - 5 - [N - (2 - hydroxyethyl)acetamido] - 2,4,6 - triiodo - N - methylbenzamide is prepared from 3-acetamido-5-amino-2,4,6-triodo - N - methylbenzamide and 2 - chloroethanol. 3 - Amino - 2,4,6 - triiodo - N- methyl- 5 - {N - [2 - triphenylmethoxy)ethyl]acetamido} - benzamide is obtained similarly employing triphenylmethyl chloride.
Patent GB-1163583-A (GB)
Title: Methods of joining tubes
Inventor: DAVIES DAVID CHARLES
IPC: G21C13/02
Filed: 1966-06-16
Abstract: 1,163,583. Jointing by rolling. UNITED KINGDOM ATOMIC ENERGY AUTHORITY. 1 June, 1967 [16 June, 1966 (2)], Nos. 26888/66 and 26890/66. Heading B3M. [Also in Divisions F2 and G6] The end of a zirconium alloy tube 2 is joined to the end of a stainless steel tube 1 to form a nuclear reactor pressure tube, the joint being made by roll swaging the inner tube into grooves 3 provided in the outer one. A rolling tool 4 carries caged rollers 5 which are progressively expanded during rolling by a tapered mandrel 6. An external collar 7 can be used to support the tube 1. The rolling is performed at a temperature between 100‹ and 400‹ C. and preferably at 250‹ C., at which temperature the yield strength of zirconium alloy, but not of stainless steel, is reduced.
Patent GB-1212293-A (GB)
Title: A process for the preparation of an antibiotic composition
IPC: A23K20/195
Filed: 1969-05-28
Abstract: 1,212,293. Compositions containing cycloserine and O-carbamyl-D-serine. COMMERCIAL SOLVENTS CORP. 28 May, 1969 [10 June, 1968], No. 26894/69. Heading C2A. An antibiotic composition containing cycloserine and O-carbamyl-D-serine is prepared from a fermentation beer containing these antibiotics by (a) adding an edible gum to the beer in a proportion of 1 to 1À5 gms./lb. of beer; (b) adjusting the pH to 8À2-8À8 with Ca(OH) 2  or CaO; (c) concentrating the beer at subatmospheric pressure and at not more than 60‹ C.; (d) recovering a mixture containing the antibiotics from the concentrate. The beer may be obtained by aerobic cultivation of Streptomyces orchidaceous in aqueous nutrient medium. The edible gum, which is for stabilizing the cycloserine during concentration and drying may be sodium carboxymethylcellulose, hydroxyethylated cellulose, polyvinyl pyrrolidone, dextrin, dextran, carrageenan, agar-agar, tragacanth, arabic, guar or polysaccharide gum produced by Xanthomonas campestris; the gum may be added as a dry solid or preferably as an aqueous solution. The pH adjustment may be made by adding just sufficient Ca(OH) 2  or CaO, or preferably by adding an excess thereof to pH 11À2-11À8 followed by addition of an acid such as hydrochloric, sulphuric, phosphoric, acetic, propionic or butyric acid to bring the pH to 8À2 to 8À8. Following concentration, the whole or filtered beer is spray-dried or drumdried to give the required composition. The composition may be added to animal feedstuffs as a growth-promoting agent.